Soldering-machine.



PATBNTED MAY' 26, 190s. J. BLACM. P. TJ. SMITH. v

soLDERING- MACHINE.

P PLIOATIOI FILED SEPI. 4, 1902.

2 SHEETS-SHEET l.

.r a BAC lo' nonni..

No. 729,261. PATENTED MAY ze, 1903.`

J. BLACK & E. J. SMITH.

SOLDERING MACHINE.

APPLIO'ATIN FILED SEPT. 4, 1902, l

v No MODEL, 2 SHEETS-SHEET 2.

N nlA;

I GWW/Lem UNITED STATES PATENT Patented May 2e, 190s..

OFFICE.

SOLDERING-MACHINE.

SPECIFICATION forming' part of Letters Patent No. 729,261, dated May 26, 1 903. Application filed September 4, 1902. Serial No. 122,110. (No model.)

To @ZZ- wwm, t may concern,.- J f J Be it known that we, JOSEPH BLACK and FRANK J. SMITH, citizens ofthe United States,

residing at San Francisco, in the county of' San Francisco and State of California, have invented certain new and useful Improvements in Soldering-Machines, of which the following is a specification.

The invention relates to the soldering of the side seams of sheet-metal can-bodies.

'Ihe object of ourinvention is to solder the side seams vof such cans rapidly, thoroughly, and economically with a minimum expenditure of solder.' v

A machine embodying our invention con ta-ins novel means of applying solder to the inside seam operating in connection with outside means for sweating the solder thoroughly into the seam, and such a machine contains various other novel features of construction and arrangement, which are fully hereinafter described and are shown in the accompany-- ing drawings, in whichelevation of the machine. Figs. 3 and 4 taken together are a plan View of the same. is a cross-section partly of the horn at @o a: of Fig. 3 and partly of the soldering-troughat y y of Fig. 3. Fig..6 is a cross-section atzz of Fig. 3. Fig. 7 isa section on w w of Fig.

6, showing in elevation the inner face of one of the frame-bars of the horn, the seam-guide, and the soldering-bar. Y

The machine is supposed to form a part continuation of a can-body-forming machine of any desired construction-such, `for. in-V stance, as the body-forming portion of the machine illustrated in our application for patent, Serial No.105,547, liled May 1, 1902. On

the latter assumption, 1 in the drawings rep- Y y behind the latter. and

through the soldering devices. It is composed of two vertical bars 4, Fig.' 6, having edges shaped to conform substantially to the arcs of the can-bodies and which are stiffened by the angle-pieces 5 and the headings 6 and are held together by rivets 7, Figs. 3 and 4, at suitable intervals. The can-bodies a l'it the frame, Figs. 5 and 6,andiare propelled along it. The bars 4 are slotted to provide guides for the reciprocating cross-heads 8, which extend transversely and project through such slots, outside of which they are secured at 9 to the reciprocating carrier-bars 11. The cross-heads andcarriers are' operated in any suitable manner from av proper driving-shaft. (Not shown.) Wehave shown a connecting-rod 12, secured at 13 to said cross-head and'- extending back through the horn to the driving mechanism of the bodymachine. Between the carrier-bars on each side are pivoted the pawls or carriers 14, thrown outwardly by springs 15, so as to bear i -a, 1:ainst'the rear of the can-body and push it Figures 1 and 2 taken together form a sideV along the length of the carrier-stroke. These springs are preferably leaf-springs, which are fixed to a flat surface of the carrier by pins 15X,"adjacent to itspivot,.aud at their free ends these springs bear on fixed pins 15', Fig.

3, and so tend to throw the operative end of such carrier positively outward. Returning each carrier yields and is drawn back through the following can-body into effective position Y The stops 10'1imit the outward movement of the pawls'or carriers 14.

Beneath the horn is a supporting-frame 16,

Acomprising vertical standards and horizontal beams.

To -this frame is bolted a bracket 18, Whichsu p ports the acid-tank 19.

tank centrally belowfthe horn and extending atan upward incline 'toward the passing can- The device `for applying acid is an arm 21, pivoted in the bodies, toward which -i t is'pres'sed by a spring 22. The arm is surfaced with soft material 23, as shown, which absorbs acidfrom the tank and applies it along the side seam. The solder-tank is a trough 24, depressed below its danges 25 and adjustably mounted upon the frame 16 by thev screw-bolts 26, whereby its positionrelatively to the horn can be regulated.` Below the trough are any suitable heating means for keeping the solder in a proper state of fusion. \Ve have shown a gas-pipe 27 with burner-orifices which direct jets of liame against the bottom of the trough.

The cau-bodies properly spaced upon the horn and moved intermittingly by the carriers are held in line with the side seam lowermost by the long seam-guide 28 within the horn, Fig. G, and are moved over the soldertrough and the soldering devices, which are so constructed and arranged as to apply solder to the inside of the seam, to heat the outside of the seam, and to thoroughly sweat the solder throughout the seam both from inside and outside. 4The solder-applying devices comprise two cooperating mechanisms. Thereis a long solid soldering iron or bar 29 set longitudinally and centrally in the trough and extending from end to end, Figs. l and 2, and having a substantially dat surface. In its upper surface is a series of recesses 3l, (three of which are shown,) spaced according to the lengths of the can-bodies and each having a beveled edge 32, facing the oncoming bodies. This bar performs a double fu nction-that is, besides acting as a soldering or sweating iron it is also the main support for the horn, which it underlies for the greater part of its length and whose rigidly-secured seam-guide 28 is directly supported by it. The end of the horn can thus be free and supporting-rollers dispensed with. The beveled edges to the recesses enable the canbodies to enter between. The upper surface of the bar is always above the solder-level; but its recesses extend below the solder-,which in ordinary practice fills the trough. Hence there is solder in the recesses. With this bar coperates a series of solder-applying devices 33, Figs. l, 3, and 5. They are preferably, but not necessarily, rollers or arms 34, hinged upon transverse pins 35 within the horn and are so set as to drop by gravity into the respective recesses of the bar 29, normally resting against stops 36. During the interval of rest they dip into the solder, Fig. l; but they are struck and lifted successively by the caubodies,whieh pass beneath them. Hence, supposing there are three rollers, as illustrated, each can-body receives three successive applications of solder to the interior along the inside of its seam. The rollers have very narrow edges, as shown in Fig. 5, which bear against the body at the open side only of the seam, and hence no solder is wasted by being applied to the closed side of the seams. The seam-guide being heated by the soldering-bar 29 becomes in itself an inside-soldering bar. It is,moreover, provided with beveledged recesses 30, registering with those in lthe soldering-bar to allow the rollers to rise, such rollers being in the same vertical plane as the guide. Thus there are several successive applications of a small quantity of solder to the inside. As the outside of the seam is in contact with the hot soldering-bar, the solder is thoroughly sweated into the seam as the can progresses. In practice some small quantity of solder nds its way to the bar underneath the seam, and so, althoughl the surface of the bar receives no solder directly from the tank, there is always a thin film upon it, which is applied to and sweated into the seam from the outside. This results in a very eective, thorough, and also economical side-seam soldering. Beyond the series of recesses tbe-soldering-bar has a straight flat upper surface, along which the heating and sweating continues. It should be stated that that part of the solder-trough which contains the solder need not extend farther than is required to give solder to the rollers. In this case the remainder of the soldering-bar may receive heat directly from the flame. The seams are then wiped and the soldered bodies discharged. The outside wiper is a brush 37, mounted in a lever 3S, which by a spring 39 is forced against the scam, automatically adjusting itself as the brush wears, Fig. 2. The inside wiper is a spring-pressed or gravity block 4l, having a brush 42 and pivoted at 43 within the horn, Fig. 4, the brush resting on the inside of the seam, as indicated in Fig. 2. After being wiped the canbodies are discharged from the horn upon a conveyer 44, one end roller of which is shown as mounted upon a cross-shaft in the wipersupport 45 and which is driven by a sprocket 46 from the driving system of the machine or from an external source.

Ve do not limit ourselves to the precise constructions and arrangements described herein and shown in the drawings, as we desire to avail ourselves of such modifications and equivalents as fall properly within the spirit of our invention.

Having thus fully described the nature of our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In asoldering-machine, a horn, a soldertank supported below it, a soldering-bar in the tank, arms hinged in the horn and normally dipping into the tank, and means for propelling can-bodies along the horn, whereby said arms are withdrawn within said canbodies.

2. In a side-seam-soldering machine, a horn open at the bottom and having a seam-guide secured within it, a solder-tank beneath the horn, and a bar in said tank upon which said seam-guide normally rests, substantially as described and shown.

3. In a soldering-machine, a horn open at: the bottom, a soldering-tank beneath it, rollers hinged in the horn and dipping into the tank, and means for propelling can-bodies along the horn, whereby said rollers are withdrawn within the can-bodies, substantially as described and shown.

4. In a soldering-machine, a horn open at the bottom, a soldering-tank, a bar in said tank having'its upper surface above the solder-level, but provided with recesses extending below said level, arms hinged in the horn and projecting into said recesses, and means IOO IIO

.for propelling can-bodies along the horng' whereby said arms are intercepted and raised from the recesses and into the can-bodies, substantially as described and shown.

5. In a soldering-machine, a horn for guiding the can-bodies, a solder-tank beneath it, rollers hinged in the horn and projecting normally into the tank, such rollers being intercepted and raised by andinto the can-bodies, and being so placed relatively to the inside seam as to apply solder adjacent to its open side, substantially as described and shown.

6. In a soldering-machine, a horn, a soldertank, a soldering-bar in said tank and eX- tending above it, an inside solder-applying device dipping into the tank, and caused to enter can-bodies on the horn by contact with `said bodies, and heating means: Vwhereby solder is applied to the inside of the can, and is sweated into the seam by the outside contact between said seam and said solderingbar, substantially as describedv and shown.

7. In asoldering-machine, the combination with the horn and with devices for applying solder within a can-body on the horn, of a seam-guide within the horn having recesses in its edge, substantially as and for the purposes set forth.

8. In a soldering-machine, the combination with the horn, of pivoted arms projecting therefrom, a solder-tank from which said arms receive solder, and a seam-guide within the horn, and in the vertical'plane of said arms, and provided with recesses to permit said arms to be withdrawn within the horn, substantially as described and shown.

9. In a soldering-machine, a horn, a seamguide within it having recesses, a soldertrough, a solderingbar within it having registering recesses, and arms hinged within the es L2 horn, and projecting normally into the recesses of the soldering-bar, but adapted to be withdrawn into the recesses in the seamguide, substantially as described and shown.

l0. In a soldering-machine, a horn, a bar or seam-guide within' the same having beveledged recesses, a solder-trough, a solderingbar within the same having registering beveled-edged recesses; the two bars being normally in contact but adapted to receive the can-body side seam between them, substantially as described and shown.

l1. In a soldering-machine, a horn, a solder-tank, a soldering-bar in said tank, an inside soldering-bar normally in contact with the outside bar, an inside solder-applying device normally dipping into the tank, but caused to `rise and enter can-bodies on the horn by contact with said bodies, thereby applyingsolder to the inside of the said bodies, and heating means; whereby the solder is sweated into the seam substantially as described.

12. In a soldering-machine, a horn, a solder-tank, a soldering-bar, an inside solderapplying device dipping into the tank and caused to rise and enter can-bodies on the horn by contact with said bodies, thereby applying solder to the inside of the said bodies, and means for heating'the solder and the solder-bar whereby the solder is sweated into the seam, substantially as described.

In testimony whereof we have affixed our signatures, in presence of two witnesses, this 26th day of August, 1902.

JOSEPH BLACK.

FRANK J. SMITH. Witnesses:

HARRY L. HORN, E. J. MABAURD. 

